power: fix frequency list return code

The power_pstate_cpufreq_freqs() function was returning -1 in an
unsigned int, causing buffer over-runs when the results were being
processed. This function should be returning zero for all error
conditions, similar to it's acpi relation, power_acpi_cpufreq_freqs().

Fixes: e6c6dc0f96c8 ("power: add p-state driver compatibility")

Signed-off-by: David Hunt <david.hunt@intel.com>

diff --git a/lib/librte_power/power_pstate_cpufreq.c b/lib/librte_power/power_pstate_cpufreq.c
index 9111e6a..c4d972f 100644 (file)
--- a/lib/librte_power/power_pstate_cpufreq.c
+++ b/lib/librte_power/power_pstate_cpufreq.c
@@ -581,7 +581,7 @@ power_pstate_cpufreq_freqs(unsigned int lcore_id, uint32_t *freqs, uint32_t num)
 
        if (lcore_id >= RTE_MAX_LCORE) {
                RTE_LOG(ERR, POWER, "Invalid lcore ID\n");
-               return -1;
+               return 0;
        }
 
        if (freqs == NULL) {